Warp-drawing machine.



No. 871,680. PATENTED NOV. 19, 1907. M. F. FIELD, E. P. HATHAWAY & c. D. LANNING.

a sums-sum 1 R if 3 F x 1 2 .2 Whitman I Wan/'7' Nd. 871,680. PATENTED NOV. 19, 1907. M. P. FIELD, E. F. HATHAWAY & G. D. LANNING.

WARP DRAWING MACHINE.

APPLICATION FILED MAY 16, 1904.

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PATENTED 10119; 190?. M. P. FIELD, a. P. HATHAWAY & c. n. LANNINGJ WARP DRAWING MACHINE.

APPLICATION FILED MAY 16, 19M.

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swuddou .machines, and more proved means for gui strnc'tion of nnrrnp S T S PATENT onrron MILLARD F. FIE D, or'win'rnaon'Ann EDGAR F. HATHAWAY AND CHARLES n. LANNING, or BOSTON, MASSACHUSETTS, ASSIGNORS To AMERICAN WARP-DRAWING MACHINE COMPANY, or BOSTON, MASSACHUSETTS, Co roRATIo or MAINE.

wAar-naawine mAoinNE.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application filed May 16. 1904. Serial No. 208105.

To all whom 'it may concern:

Be it known that we, MILLARD F.- FIELD, of Winthrop, and EDGAR F. HATHAwAYand =CHARLES- D. LANNiNG, both of Boston, all

in the county of Suffolk and Commonwealth of Massachusetts have invented certain Improvements in arp-Drawin -Machines, of which the following is a speci cation.

This invention relates to war drawing the. drawin -in needle, an improved conreed-dent opener, as well as other mechanisms and instrumentalities cooperating with the needle, the needle driving mechanism and the reed opener.

()ur invention will be best understood by reference to the following description, when taken in connection with the accompanying 20 illustration of one specific embodiment thereof, while its scope will be more particularly pointed out in t e appended claims.

In the drawings :--Figure 1 is an end elevation of a warp drawing machine, showing the principal parts associated with the presart of the machine being shown in section; 1g. 2 is an elevation of the reed, the reed {opener and its supports, and the needle guide viewed from the left in Fig; 1; Fig. 3

is a plan view of the machine with the main standard and reed removed; Fig. 4 shows an end and edge elevation of the reed opener; Fig. 5 shows a front and top view of the needle guide; Fig. 6 shows in front elevation several series of reed-dents undergoing sepa ration by reed openers, constructed for contrast both according to one form of our present invention and according to the prior art; Figs. 7, 8, 9 and 10 are similar contrasting views Shown in side elevation; Figs. 11

and 12 are similar contrasting views shown in section; and Figs. 13 and 14 are similar contrasting views shown in end elevation.

Referring to the drawings and to the en1- bodiment of our invention there illustrated, upon the base A of the machine is mounted a sliding carriage O, the latter provided with a standard 0 acting to support the guide-Way c" of the needle-stock c, as well as the mech* anism which acts to reciprocate the needle a. To give the needle a partial rotation near the outer end of its stroke the guide (particulary to im--, ing and supporting reed opener r has a bearin way- 6 is provided with acurved slot 0, which slot is engaged by. a projecting in carried by the stock c. At the inner en of the carria e there is also provided another standard fi which supports the needle guide a rigidly upon the carriage and in a definite position relatively to the path of the reciprocatory needle, but referably near the front of the reed R, and elow the reed opener, so that the needle guide is caused to travel with the carriage across the face of the reed and below' the line of action of the reed opener. With one end supported also in the same standard B is the shaft 9 which latter su ports the bell-crank lever g", on the uprig t arm of which the end of the shaft for the To rock the bell-crank lever g about its fulcrum for withdrawing the reed opener from or re lacing it in o erative position relatively to t ie reed, the ower arm of the lever g has jointed attachment to a backwardly extending rod g. The opposite end of the rod passes through an opening in a standard g upon the carriage O and is provided with aspring 9 between the standard and a checknut on the end of the rod. The rod therefore is. normally retracted and the reed 0 ener held forward in operative relation to t e reed.

For the pur ose of withdrawing the reed opener from t e reed, and simultaneously locking the driving mechanism upon the carriage (J, a lug g is secured to the rod 9 and against this lug bears an upright lever g. The lever g is secured to a short longitudinal shaft 9 which is also the fulcrum of a hand operated locking-lever e and of devices for engaging and disengaging the feed screw of the carriage C. The lever e lies closely beside a wheel e upon a counter-shaft b,

which wheel has a curved locking slot e extending from the edge inwardly, into which slot the locking pin e on the levere may be moved by raising the outer end of the latter when the slot e is in pro or position. Raising the hand-lever e there 'ore turns the shaft g and causes the lever g to act upon the lug g and push the rod 9 toward the reed, together with the lower end of the cranklever g. This will cause the upper end of the leverg with the reed opener r to move in the opposite direction and withdraw the opener fromithe reed. The crank-wheel b which reciprocates the needle a and the the extreme limit ofits backward stroke.

Vvith the needle retracted, therefore, if the hand lever .e is raised the carriage is disconnected from the feed. screw, the driving mechanism locked and the reed openen si multaneously withdrawn from the reed, If

the handle is depressed the reed 0 ener is drawn back intoengagement with t 1e reed, the driving mechanism releasedand the carriage operatively connected with the feed screw.

The supporting frame r for the reed is hung upon overhead anti-friction rolls so i that it may be adjustedfreely in a longitudinal direction by the mere action of the reed opener itself.

' In order to strip the drawn-in thread from the needle a there is provided thedownwardly acting reciprocating stripper arm 0 operatively connected to the drlving mechanism upon the carriage so that when the needle is at its extreme rearward position the arm acts to stri the thread downwardly.

The improved reed opener r consists (Fi 4) of a spiral blade which preferably extends along its operating shaft 11, the latter journaled in the upright lever arm through an arc of not more than 360. This blade also is preferably provided with a thin entering wedge r increasing in thickness gradually until the circumferential portion 2" is reached near the opposite edge of the blade,

which enlarged portion-r holds the reed splits separated during the drawing-in operatron. the reed opener is a feature of considerable importance in a practical Wa chine, where the needle may e driven at a speed' of from 200 to 300 picks per minute, and .used in connection with reeds having from 35. to splits to the inch. Under these circumstances accurate enga ement and separation of the reed splits by the reed opener is diflicult without frequently break- 1 q ingthe splits or unseating them from the reed shafts or impairing their resiliency by permanently bending or setting them.

If a reed opener having a spiral blade with a circumferential measurement of more than 360 is employed, engagement with the reed splits results in some such effect as is represented by the reed openers marked .1 and 2 in 6 and the reed o eners shown in Figs. 8, 1 0

and 12, where it wil be seen that the reed split is wiped between the two overla ping ends of i the blade and given a compoun bend. The

rapid and severe downward wiping effect of an opener of this construction not only tends 'llus construction and operation of drawing ma-v .toabrade or-mark the split as well as permanently to bend orset the same, but

throu h the'severe tension exerted also tends V to pull the split from its seat. l.

. With a reed opener having a circumferential blade portionof-360 or preferably less than 360.9,"as represented in the drawings,

and with the same axial oifset between the entering and leaving points, the blade can wipe down over the splits as rapidly' as its rotativemotion will permit, whlle allowing the split to assume a simple curved form, such, for example, as is shown by the split enga ed by the reed openers 3 and 4 in Fig.

' 6 an by the reed opener in Figs. 7, 9' and 11. An exaggerated contrast between the action of the two reed openers is represented in Figs. 13 and 14. The gradual increase of the thickness from the entering to the leaving points of the blade'fp'rovides a long, narrow wedge which effects the separation of the splits gradually and easily.

Another ad vantage of the reed opener having a circumferential blade portion ofnot more than 360 lies in the fact that the custoinary dwell (or pause in the rotation ofthe reed opener, which dwell preferably takes place at or about the'time of maximum separation to permit the passage of the needle, may occur as shown by reed opener 4 in Fig.

6 and by the reed opener in Fig. 9 at the in-v stant when the leaving point is about to be withdrawn from one side of a split and the entering point has engaged the opposite side thereof, under which conditions the split is undergoing but little distortion. With the reed opener designated 2 in Fig.6 or that shown in FigflQ and Where the flange or blade is of greater extent than 360, the

period of dwell must occur when the split is considerablybent or distorted and this tends obviously topermanently set or distort the split.

Heretofore'as shown in Sherman patent 4 No. 363,689, Ma 24, 1887, the guide for the drawin -in need e has been-located in sub-- stantia ly the same horizontal plane with the portion of the reed openerwhich engages the reed and outside ofthe'axis of the reed opener, the opening from the needle guide 'throu h which the drawn-in thread was remove. extending from the upper side of the guideopening so that when t e thread was rawn out it was apt to remain in or fall vdown into the path of reciprocation-of the needle, and thus be caught by it and pushed back into the reed by the next forward movement of the needle and entangled with v the next drawn-in thread.-

In the illustrated construction the needle guide a has'a bell-shaped mouth (Fig; 5) provided with a: downwardly inclined exit slot at through which the drawn-in thread may be forced down and away from the path of the needle by the reciprocatory stripper arm 0. The bell-shaped mouth insures the entrance of the needle point even when somewhat deflected from its normal path, while the location of the guide close to the front or face of the reed and between it and a vertical plane passing through the axis cl the reed opener, makes it specially efi'ective in accurately presenting and introducing the needle point between the separated reed splits. The location of the thread guide not only provides for the positioning of the drawn-in thread away from the needle path but also away from the line of action of the reedopener. To assist this purpose the latter is best positioned, as shown, so as to have itsline of progressive action parallel with and relatively near the top shaft of the reed. This positioning of the reed opener not only reduces the likelihood of conflict with the drawn-in thread but materially increases the effectiveness of the opener itself, for it is thereby caused to act upon the reed splits relatively near their seats where a slight spreading action causes a relatively wide se aration at the mid-portion of the reed W ere the needle-acts. For operating in this position where the reed splits are relatively stiff, a reed opener of the construction described is a marked advantage.

' It-will be observed that the needle guide a has a rigid support upon the needle earriage andthat in this respect it is independentof ,the reed opener, so that any tendency towards vibration or displacement of the thread guide under the needle action cannot afiect the reed opener or vice versa. --1While we have shown and described one form of our invention it will be understood that the same is not limited to the disclosed form or to the details of construction or form or relative arrangement of the parts shown, but that extensive modifications and departures may be made without departing fromthe spirit of our invention.

We claim:

1. In a warp-drawing machine, a loomreed, supports upon which the reed may readily move longitudinally by the action of the reed-opener, and a rotary spiral reddopener, the blade of which gradually increases in thickness from the edge which first enters the reed-dent to the part which holds the splits separated during the drawing-in operation.

2.,In, a warp-drawing machine, a loomreed, supports upon which the reed may readily move longitudinally by the action of the reed-opener, and a rotary spiral reedopener the blade of which extends through. an are not greater than 360 degrees of a circle.

In a warp-drawing 1 lil(l\lll ,,1t loomreed,-a rotary spiral reed-opener, the blade of which extends through an are not greater than 360 degrees of a circle, and gradually increases in thickness from its entering edge to the portion which holds the splits separated during the drawing-in operation.

4. In a warpdrawing machine, a loomreed, a reciprocating drawing-in needle, a rotary reed-opener and a fixed needle-guide, located between the front of the reed and a vertical plane passing through the axis of the reed-opener.

5. In a warp-drawing machine, a loomrced, a reciprocating drawing-in needle, a guide for the needle fixed upon the needle carriage in proximity to the reed, a rotary spiral reed-opener, and means to withdraw the opener from the reed and simultaneously lock the driving mechanism.

6. In a warp-drawing machine, a loomreed, a reciprocating drawing-in needle, a

guide for the needle, fixed upon the-needle carriage in proximity to the reed, a rotary spiral reed-opener and an independent support therefor with means to operate the support to control the position of the opener in relation to the reed.

7. In awarp-drawing machine, a reciprocating drawing-in needle, a loom-reed, supports for the reed upon which it may readily move longitudinally by the action of the reed-opener, a reed-opener adapted to engage the splits continuously and successively open the dents for the passage of the drawing-in needle, a guide for the needle, fixed to needle carriage in a position close to the front of the reed, and an independent support for the reed-opener, which support is adapted to control the operative engagement of the opener with the reed.

8. In a warp-drawing machine, a reciprocating drawing-in needle, a fixed bellmouthed needle-guide near the front of the reed and provided with a downwardly ex tending slot from the guide opening, for the release of the threads drawn-in.

9. In a warp-drawing machine, a drawing-in needle, me ans to reciprocate the needle longitudinally and rotatively, and a bellmouthed needle-guide fixed in proximity to the trout of the reed and independently supported on the needle carriage, which guide has a slot extending out from the guide opening to permit the passage of the drawn-in thread when stripped from the needle.

10.*-In a warp-drawing machine, a drawing-in needle, means to reciprocate the needle longitudinally and rotatively, a device to strip the drawn-in thread from the needle, and a needle-guide fixed in proximity to th: reed and provided with a slot extending out from the guide opening in a direction below the horizontal, to permit the drawn-in thread to be ,removed therefrom and carried away from the path of reciprocation of the needle by the strippingdevice.

11. In a Warp-drawin machine, a reciprocating drawing-in needIe, a reed-opener, a

nhedlenation with a leasing slot.

below t thread releasing slot extendiiig downwardly from the guide opening, and a needle stripping'device ada ted to'nress the drawn-in threads downward '12. Inawar drawing machine the combio0rn-reed of a reciprocatory drawing-1n needl'e,ja needle carriage and a needle uide rigidly mounted on thecarria e.

13. n a Warp drawing machine the coin ination with a reciprocatory drawing-in needle, a needle carriage and a needle guide supported on the carriage. I

14. The Combination in a warp drawing machine of a loom-reed, a reedopener, a reoiprocatory drawing-in needle and a needle h drawing-in needle, a

' needle guide supported on the carriage and guide supported independently of the reed opener. 1

.15. In a warp drawing machine the combination with a loom-reed, a reciprooatory needle carriage and a positioned in front of the reed.

16. In a warp drawing machine the coinhination with a loom-reed, reed opener hav- 1 inga movement into or out of operative rela- :tlon tothe reed and a I 80 needle guide having a .fixed operative relation to the reed.

. l7.-'in a warp drawing machine haying a reed, a swingingly mounted reed opener and a rigidly supported needle guide.

18 Ina war drawin machinethe combination with a. own-reed of a rotatabie reed .opener and a needle guide, the latter positloned between the reed and a vertical plane passin through the axis of the reed opener.

19. n awarp drawing machine the combination with a reoiprooatory drawing-in needie of'a loom-reed, a needle guide and a reed opener having a line of action upon the reed a ove the path of the needle movement.

20. In a warp drawing machine the comhir nation with a loom-reed, a needle guide and a reed'opener, the latter mounted for with drawal from the reed independently oi the needle guide. 7

21. A warp drawing machine having a iiide' fixed in proximity to the reed 'e reed-opener, which guide is providedwith a throngh said re along the eraeat loom-reed and a reed opener, the latter hat ing a line of action onthe reed above thei rind-portion of the reed splits.

22. A machine for drawing warp threads I 360, said reed opener being positioned to act upon the reed at one .side of the mid-portion of the reed split.

26. A warp drawing machine having a loom-reed, a reed opener acting upon the reed above the mid-portion of the reed splits and a reciprocatory drawing-in needle acting mid-portion of the reed splits. 27. A warp drawing-machine iaving a reed opener, a needle, a needle guide and means to strip the threads below the reed opener and the guide,

28. A warp drawing machine havinga loom-reed, a reciprocatory needle, av reed opener and downwardly acting thread stripp ng means.

29. In a warp drawing machine the combination with a loom-reed, a reciprooatory drawin -in needle, a rigidly positioned needle guide, a reed opener, driving mechanism and means simultaneously to lock the drivi ing mechanism and render the reed opener inoperative. it

MILLARD r. FIELD.

EDGAR F. HATHAWAY. Y

enemas n. LANNING.

Witnesses:

AeNnsB. Henson, HERBERT N. Nnrn. 

